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Contract OI history

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Nov 20, 2026 EXPIRATION

HAFN $12.50 Call

HAFN261120C00012500

Latest saved OI977Oct 20, 2026
Last change+300vs previous saved observation
Saved market days9Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
HAFN $12.50 call open interest history 9 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 9774880 2026-10-02: 92 OI2026-10-05: 92 OI2026-10-06: 110 OI2026-10-07: 209 OI2026-10-09: 240 OI2026-10-13: 286 OI2026-10-14: 373 OI2026-10-16: 677 OI2026-10-20: 977 OI Oct 02, 2026Oct 20, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

HAFN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing977+300
Oct 16, 2026677+304
Oct 14, 2026373+87
Oct 13, 2026286+46
Oct 09, 2026240+31
Oct 07, 2026209+99
Oct 06, 2026110+18
Oct 05, 2026920
Oct 02, 202692No prior observation